Sampling
Two Major Types of Sampling Methods Probability sampling Uses some form of
Nonprobability sampling
random selection. Requires that each unit have a known (often equal) probability of being selected. Selection is systematic or haphazard, but not
Groups in Sampling Who do you want to generalize to?
Groups in Sampling The theoretical population
Groups in Sampling The theoretical population What population can you get access to?
Groups in Sampling The Theoretical Population The study population
Groups in Sampling The theoretical population The study population How can you get access to them?
Groups in Sampling The theoretical population The study population The sampling frame
Groups in Sampling The theoretical population The study population The sampling frame
Who is in your study?
Groups in Sampling The theoretical population The study population The sampling frame
The sample
Where Can We Go Wrong? The theoretical population The study population The sampling frame
The sample
Where Can We Go Wrong? The theoretical population The study population The sampling frame
The sample
Where Can We Go Wrong? The theoretical population The study population The sampling frame
The sample
Where Can We Go Wrong? The theoretical population The study population The sampling frame
The sample